In the sky, a large number of invasive species are flying around, landing from time to time to drop corpses, materials, and other things into the nutrient pool; After the newborn invasive species has adapted to walking, they do not wait for the liquid on their bodies to dry up, they hang on the meat sac used to wrap themselves, staggered away, and when they pass by the nutrient pool, they throw the meat sac containing it into the pool.

Occasionally, a troop of terrestrial invasive species can be seen returning, as if they were out hunting, and throwing what they have carried back into the nutrient pool;

I guess it's because there is no prey nearby, even the trees and turf are bare, so I have to hunt prey from a distance!

After observing a circle, Zhou Sheng decided to let the invasion base get closer!

Slowly approaching the periphery, he kicked the black blade - it didn't seem dangerous.

Zhou Sheng temporarily set an assessment for this black leaf in his heart:

Flying invaders are not much of a threat to themselves, they are only sensitive to things that move faster, such as shells and missiles;

According to the information passed to him by the daughters, Xingyue and others, Zhou Sheng knew that on the human side, he had directly launched a plasma bomb attack on the base giant tree of the invasive species!

However, most of them were intercepted by flying invasions on the way by suicide!

The Flying Invaders have the ability to capture high-speed flying objects and accelerate over short distances, exceeding the sound barrier, and it is estimated that the success rate of intercepting missiles is as high as 98%!

In the second confrontation between humans and the invasive species, except for the invasion species that were hit by the human missile attack and the invasion species in the core area of the explosion directly vaporized and disappeared, the invaders who were a little farther away were only injured but not killed, showing great heat resistance weapon strike ability. Incapacitated invasive species are mercilessly fed into the nutrient pool, and within 1 hour, the lost invasive species are replenished.

If you launch a continuous attack. As long as the first nuclear bomb is intercepted, the accuracy of the second one will be affected, and as long as it does not directly hit the main body of the alien giant tree, it will not be able to kill it at all, which is a number that has been reported on a global scale and has been tested in practice. It is also the reason why the human side is in a stalemate with the invasive species!

Well, the words are far away again!

Although this flying species can catch high-speed moving objects, it may not be able to catch slow-moving objects. Moreover, Zhou Sheng is still very confident in his stealth ability!

And invasive species on land. For Zhou Sheng, it is even less threatening (at least until the state of coverage is formed), and he can't even touch Zhou Sheng's shadow......

The only thing Zhou Sheng is worried about now is the giant tree base itself. Whether it has any defensive capabilities, intruder attack weapons, or something!

And then. Zhou Sheng was like Qiyuan City again, exchanging information with the girls, and then, Zhou Sheng was at ease!

This giant tree's own defense ability is basically zero!

At the beginning of the landing, the 'meteorite' in the giant tree base of the invasive species was treated as a meteorite, and many people went to check it, and even when the invasive species began to hunt humans, because the number of invasive species guarding the giant tree base was extremely rare at the beginning, it was also "visited" by the armed forces of many countries!

There has been information about entering the Giant Tree Base!

But about what's inside the giant tree. What is it?

No one knows that it's not the alien giant tree that is dead. It's that the people who explored it died!

To sum up, there is no danger in entering the giant tree, and those who are finished are definitely touching the defense mechanism inside, or the self-destruction mechanism or something!

Under the cover of night, and most of the invading forces defending the giant tree base were diverted, with Zhou Sheng's stealth ability, Zhou Sheng's walking car, he easily broke into the outer black leaf circle, and entered the range of forty or fifty meters high tree roots under the trunk;

The hatching of invasive species by the hollow in the 'roots' largely ceases at night;

At this time, in Zhou Sheng's line of sight, he could see that on the huge tree roots as high as several floors, most of the holes covered with the depression of the entire tree roots were silent;

Moreover, tonight Tiangong is also making beauty, the dark clouds are full of stars, no stars and no moon, it can almost be said that Cheng dù who can't see his five fingers;

Raising his spiritual power to the extreme, the Night Demon glasses rotated with Zhou Sheng's pupils, providing a vision of the poor environment that did not have to be in the blue sky and the daylight, and the slightest movement around him was reflected in Zhou Sheng's mind!

Walking silently on the ground, it is like walking through your own garden;

As soon as he entered the range of the nutrient pool, Zhou Sheng asked about the fragrance of the nutrient pool full of biological energy, and the pungent smell of the unknown liquid that dissolved the living beings, two different smells, mixed together to form a dizzying smell!

Although the smell was only a little irritating and not toxic, Zhou Sheng still took out an oxygen mask and brought it, Zhou Sheng didn't want to suffer in vain!

The self-contained oxygen mask is one of the standard equipment of all people on the earth in this time and space, electrolyzed water oxygen mask;

Needless to say, on the battlefield, although this earth has enough land per capita, it has opened up many underground cities;

Once the underground city collapses, you can breathe with this mask for at least 30 days before the power runs out, as long as you add pure water to it;

If necessary, you can also replenish your own urine, so that you can also get an extra part of the pure water to drink, which is a very powerful survival tool.

When I really came to the alien giant tree, I realized that its "giant" word was true!

Looking at it from a distance, I didn't feel anything, but when I walked in and observed, the 'roots' of the giant tree were forty or fifty meters high, spreading for five or six hundred meters, and in the undulating places of the roots, Zhou Sheng estimated that the height was more than 60 meters.

From the bottom edge of the huge 'root', Zhou Sheng slowly approached the root area, and sneaked into a hole with an upward staircase;

Zhou Sheng touched the step-like structure with his hand, which was hard and elastic, like the feeling of rubber, but this was one with the giant tree, and there were natural lines growing on it, which looked like a non-slip thing;

Now that I've come here, there's no reason not to go in and take a look;

The spiritual power spreads in, and there is no trace of biological activity inside!

Climbing the stairs, Zhou Sheng approached the inside of the giant tree—inside, it was something like a doorway;

More than three meters up, there is a circular corridor, on the left and right, there are other directions into the corridor 'door opening'!

In the middle of the two doorways that enter the cloister is the entrance to the next cloister, that is, the entrance to the middle of the giant tree is staggered, like a brick-laying structure!

According to the feedback from the spiritual power exploration, Zhou Sheng's mind sketched this kind of picture, several circular corridors are set together, like sharp cones, one ring after another, increasing upward; And every entrance to the previous ring is staggered between the two entrances! After a certain distance there is an entrance to the next circular cloister;

After finding out the information, Zhou Sheng did not withdraw his spiritual power, and walked along the wall that emitted a glimmering light towards the center of the giant tree that was detected;

According to what he saw, Zhou Sheng believed that there should be the center of the giant tree;

However, the situation there made Zhou Sheng very uneasy!

Because, judging from the situation that has been done so far, the source of this invasive species is similar to the latter inference close to Zhou Sheng!

In the center of the circular corridor seen by Zhou Sheng's spiritual power, there is a circular, semicircular hall with a diameter of 20 meters and a height of 10 meters.

In the center, there is a pale yellow crystal with a diameter of more than two meters, which is inlaid on a platform that protrudes slightly from the ground; In addition to the crystal in the center, there are six small tables, on which are inlaid with a yellowish crystal the size of a football;

The most important thing is that there is nothing there except for the aforementioned crystals!

……

Putting aside the worry in his heart, Zhou Sheng still walked to the last floor of the circular corridor: the hall;

Enter the rotunda and look around, as if seen by the spiritual power, empty, without the slightest trace of biological activity!

Then, Zhou Sheng's eyes were attracted by the pale yellow crystal in the center of the hall - this pale yellow luminous crystal that looked like a crystal, and various images appeared on the surface layer by layer;

With Zhou Sheng's eyesight and processing ability, he quickly recognized that it was a map with the giant tree as the center and a radius of 100 kilometers around it—it was indeed something similar to the center of the control.

On the six hexagonal six football-sized pale yellow crystals around the huge crystal, various images also appeared on its surface; It is the terrain within a hundred kilometers of the corresponding angle, as well as the actions of the corresponding invasive species!

Other than that, there is nothing empty, the aliens in Zhou Sheng's imagination? Intelligent creatures or something?

None of them appeared.

"it!" Zhou Sheng feels that he is not good now!

"Isn't it, the alien invasion species that has reduced the human population of this world by two-thirds is just an NPC controlled by artificial intelligence AI?"

Yes, NPCs, or the kind of NPCs that only have low-level reaction modes, and don't even have autonomous abilities!

It's just that what makes Zhou Sheng feel wrong is that the giant tree of this invasive species should be able to be controlled, and there is no doorway for the common creatures to enter and exit, so it is impossible that there is no control equipment!

It's just that in this hall, there is nothing else outside the crystal that flashes with a radius of 100 kilometers of terrain and the dynamic light map of the invasion species!

"Is it in the doorway down there?"

"But if it's underground, then who is this light map for?"

Zhou Sheng felt that the control device of the giant tree must be in this hall, but he was limited by his thinking, and he didn't think of it yet!

Zhou Sheng shrouded the hall with his spiritual power, carefully observing every inch of the wall and floor, trying to find out what was different.

Or nothing.

This is too contrary to common sense, as a core hinterland, it is strange that there are no guards, and there are not even traps, which is too much to say.

The only thing that Zhou Sheng subconsciously ignored was the crystal in the center!

This is called thinking limitation! (To be continued......)